1. Department of Diabetes and Endocrinology, University Hospital Aintree, Liverpool
2. Department of Diabetes and Endocrinology, University Hospitals of Coventry and Warwickshire
3. Diabetes and Endocrinology Centre, George Eliot Hospital NHS Trust, Nuneaton, Warwickshire
4. Diabetes and Endocrinology Centre, George Eliot Hospital NHS Trust, Nuneaton, Warwickshire,